You could simply base32, base36 or base64 encode the UUID's (as an example). Other than that; in IE6 times URL's had a limitation of 1K or 4K or something arou

You could simply base32, base36 or base64 encode the UUID's (as an example). Other than that; in IE6 times URL's had a limitation of 1K or 4K or something around that lenght IIRC, so unless you're using dozens of UUID's in a URL this hasn't been a problem for ages.